1. 22 Aug, 2017 1 commit
  2. 05 Jul, 2017 1 commit
  3. 03 Jul, 2017 1 commit
    • Thomas Bogendoerfer's avatar
      parisc: DMA API: return error instead of BUG_ON for dma ops on non dma devs · 33f9e024
      Thomas Bogendoerfer authored
      Enabling parport pc driver on a B2600 (and probably other 64bit PARISC
      systems) produced following BUG:
      
      CPU: 0 PID: 1 Comm: swapper Not tainted 4.12.0-rc5-30198-g1132d5e7 #156
      task: 000000009e050000 task.stack: 000000009e04c000
      
           YZrvWESTHLNXBCVMcbcbcbcbOGFRQPDI
      PSW: 00001000000001101111111100001111 Not tainted
      r00-03  000000ff0806ff0f 000000009e04c990 0000000040871b78 000000009e04cac0
      r04-07  0000000040c14de0 ffffffffffffffff 000000009e07f098 000000009d82d200
      r08-11  000000009d82d210 0000000000000378 0000000000000000 0000000040c345e0
      r12-15  0000000000000005 0000000040c345e0 0000000000000000 0000000040c9d5e0
      r16-19  0000000040c345e0 00000000f00001c4 00000000f00001bc 0000000000000061
      r20-23  000000009e04ce28 0000000000000010 0000000000000010 0000000040b89e40
      r24-27  0000000000000003 0000000000ffffff 000000009d82d210 0000000040c14de0
      r28-31  0000000000000000 000000009e04ca90 000000009e04cb40 0000000000000000
      sr00-03  0000000000000000 0000000000000000 0000000000000000 0000000000000000
      sr04-07  0000000000000000 0000000000000000 0000000000000000 0000000000000000
      
      IASQ: 0000000000000000 0000000000000000 IAOQ: 00000000404aece0 00000000404aece4
       IIR: 03ffe01f    ISR: 0000000010340000  IOR: 000001781304cac8
       CPU:        0   CR30: 000000009e04c000 CR31: 00000000e2976de2
       ORIG_R28: 0000000000000200
       IAOQ[0]: sba_dma_supported+0x80/0xd0
       IAOQ[1]: sba_dma_supported+0x84/0xd0
       RP(r2): parport_pc_probe_port+0x178/0x1200
      
      Cause is a call to dma_coerce_mask_and_coherenet in parport_pc_probe_port,
      which PARISC DMA API doesn't handle very nicely. This commit gives back
      DMA_ERROR_CODE for DMA API calls, if device isn't capable of DMA
      transaction.
      
      Cc: <stable@vger.kernel.org> # v3.13+
      Signed-off-by: default avatarThomas Bogendoerfer <tsbogend@alpha.franken.de>
      Signed-off-by: default avatarHelge Deller <deller@gmx.de>
      33f9e024
  4. 24 Jan, 2017 1 commit
    • Bart Van Assche's avatar
      treewide: Constify most dma_map_ops structures · 5299709d
      Bart Van Assche authored
      Most dma_map_ops structures are never modified. Constify these
      structures such that these can be write-protected. This patch
      has been generated as follows:
      
      git grep -l 'struct dma_map_ops' |
        xargs -d\\n sed -i \
          -e 's/struct dma_map_ops/const struct dma_map_ops/g' \
          -e 's/const struct dma_map_ops {/struct dma_map_ops {/g' \
          -e 's/^const struct dma_map_ops;$/struct dma_map_ops;/' \
          -e 's/const const struct dma_map_ops /const struct dma_map_ops /g';
      sed -i -e 's/const \(struct dma_map_ops intel_dma_ops\)/\1/' \
        $(git grep -l 'struct dma_map_ops intel_dma_ops');
      sed -i -e 's/const \(struct dma_map_ops dma_iommu_ops\)/\1/' \
        $(git grep -l 'struct dma_map_ops' | grep ^arch/powerpc);
      sed -i -e '/^struct vmd_dev {$/,/^};$/ s/const \(struct dma_map_ops[[:blank:]]dma_ops;\)/\1/' \
             -e '/^static void vmd_setup_dma_ops/,/^}$/ s/const \(struct dma_map_ops \*dest\)/\1/' \
             -e 's/const \(struct dma_map_ops \*dest = \&vmd->dma_ops\)/\1/' \
          drivers/pci/host/*.c
      sed -i -e '/^void __init pci_iommu_alloc(void)$/,/^}$/ s/dma_ops->/intel_dma_ops./' arch/ia64/kernel/pci-dma.c
      sed -i -e 's/static const struct dma_map_ops sn_dma_ops/static struct dma_map_ops sn_dma_ops/' arch/ia64/sn/pci/pci_dma.c
      sed -i -e 's/(const struct dma_map_ops \*)//' drivers/misc/mic/bus/vop_bus.c
      Signed-off-by: default avatarBart Van Assche <bart.vanassche@sandisk.com>
      Reviewed-by: default avatarChristoph Hellwig <hch@lst.de>
      Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
      Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com>
      Cc: David Woodhouse <dwmw2@infradead.org>
      Cc: Juergen Gross <jgross@suse.com>
      Cc: H. Peter Anvin <hpa@zytor.com>
      Cc: Ingo Molnar <mingo@redhat.com>
      Cc: linux-arch@vger.kernel.org
      Cc: linux-kernel@vger.kernel.org
      Cc: Russell King <linux@armlinux.org.uk>
      Cc: x86@kernel.org
      Signed-off-by: default avatarDoug Ledford <dledford@redhat.com>
      5299709d
  5. 04 Aug, 2016 1 commit
    • Krzysztof Kozlowski's avatar
      dma-mapping: use unsigned long for dma_attrs · 00085f1e
      Krzysztof Kozlowski authored
      The dma-mapping core and the implementations do not change the DMA
      attributes passed by pointer.  Thus the pointer can point to const data.
      However the attributes do not have to be a bitfield.  Instead unsigned
      long will do fine:
      
      1. This is just simpler.  Both in terms of reading the code and setting
         attributes.  Instead of initializing local attributes on the stack
         and passing pointer to it to dma_set_attr(), just set the bits.
      
      2. It brings safeness and checking for const correctness because the
         attributes are passed by value.
      
      Semantic patches for this change (at least most of them):
      
          virtual patch
          virtual context
      
          @r@
          identifier f, attrs;
      
          @@
          f(...,
          - struct dma_attrs *attrs
          + unsigned long attrs
          , ...)
          {
          ...
          }
      
          @@
          identifier r.f;
          @@
          f(...,
          - NULL
          + 0
           )
      
      and
      
          // Options: --all-includes
          virtual patch
          virtual context
      
          @r@
          identifier f, attrs;
          type t;
      
          @@
          t f(..., struct dma_attrs *attrs);
      
          @@
          identifier r.f;
          @@
          f(...,
          - NULL
          + 0
           )
      
      Link: http://lkml.kernel.org/r/1468399300-5399-2-git-send-email-k.kozlowski@samsung.comSigned-off-by: default avatarKrzysztof Kozlowski <k.kozlowski@samsung.com>
      Acked-by: default avatarVineet Gupta <vgupta@synopsys.com>
      Acked-by: default avatarRobin Murphy <robin.murphy@arm.com>
      Acked-by: default avatarHans-Christian Noren Egtvedt <egtvedt@samfundet.no>
      Acked-by: Mark Salter <msalter@redhat.com> [c6x]
      Acked-by: Jesper Nilsson <jesper.nilsson@axis.com> [cris]
      Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> [drm]
      Reviewed-by: default avatarBart Van Assche <bart.vanassche@sandisk.com>
      Acked-by: Joerg Roedel <jroedel@suse.de> [iommu]
      Acked-by: Fabien Dessenne <fabien.dessenne@st.com> [bdisp]
      Reviewed-by: Marek Szyprowski <m.szyprowski@samsung.com> [vb2-core]
      Acked-by: David Vrabel <david.vrabel@citrix.com> [xen]
      Acked-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> [xen swiotlb]
      Acked-by: Joerg Roedel <jroedel@suse.de> [iommu]
      Acked-by: Richard Kuo <rkuo@codeaurora.org> [hexagon]
      Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> [m68k]
      Acked-by: Gerald Schaefer <gerald.schaefer@de.ibm.com> [s390]
      Acked-by: default avatarBjorn Andersson <bjorn.andersson@linaro.org>
      Acked-by: Hans-Christian Noren Egtvedt <egtvedt@samfundet.no> [avr32]
      Acked-by: Vineet Gupta <vgupta@synopsys.com> [arc]
      Acked-by: Robin Murphy <robin.murphy@arm.com> [arm64 and dma-iommu]
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      00085f1e
  6. 21 Jan, 2016 1 commit
  7. 10 Sep, 2015 1 commit
  8. 21 Apr, 2015 1 commit
  9. 15 Apr, 2015 1 commit
  10. 06 May, 2013 1 commit
    • Helge Deller's avatar
      parisc: fix partly 16/64k PAGE_SIZE boot · 6a45716a
      Helge Deller authored
      This patch fixes partly PAGE_SIZEs of 16K or 64K by adjusting the
      assembler PTE lookup code and the assembler TEMPALIAS code.  Furthermore
      some data alignments for PAGE_SIZE have been limited to 4K (or less) to
      not waste too much memory with greater page sizes. As a side note, the
      palo loader can (currently) only handle up to 10 ELF segments which is
      fixed with tighter aligning as well.
      
      My testings indicated that the ldci command in the sba iommu coding
      needed adjustment by the PAGE_SHIFT value and that the I/O PDIR Page
      size was only set to 4K for my machine (C3000).
      
      All this fixes partly the boot, but there are still quite some caching
      problems left.  Examples are e.g. the symbios logic driver which is
      failing:
      
      sym0: <896> rev 0x7 at pci 0000:00:0f.0 irq 69
      sym0: PA-RISC Firmware, ID 7, Fast-40, SE, parity checking
      CACHE TEST FAILED: DMA error (dstat=0x81).sym0: CACHE INCORRECTLY CONFIGURED.
      
      and the tulip network driver which doesn't seem to work correctly
      either:
      
      Sending BOOTP requests .net eth0: Setting full-duplex based on MII#1
      link partner capability of 05e1
      ..... timed out!
      
      Beside those kernel fixes glibc will need fixes too to be able to handle
      >4K page sizes.
      Signed-off-by: default avatarHelge Deller <deller@gmx.de>
      6a45716a
  11. 10 May, 2012 1 commit
    • Rolf Eike Beer's avatar
      parisc: move definition of PAGE0 to asm/page.h · 4a8a0788
      Rolf Eike Beer authored
      This was defined in asm/pdc.h which needs to include asm/page.h for
      __PAGE_OFFSET. This leads to an include loop so that page.h eventually will
      include pdc.h again. While this is no problem because of header guards, it is
      a problem because some symbols may be undefined. Such an error is this:
      
      In file included from include/linux/bitops.h:35:0,
                       from include/asm-generic/getorder.h:7,
                       from arch/parisc/include/asm/page.h:162,
                       from arch/parisc/include/asm/pdc.h:346,
                       from arch/parisc/include/asm/processor.h:16,
                       from arch/parisc/include/asm/spinlock.h:6,
                       from arch/parisc/include/asm/atomic.h:20,
                       from include/linux/atomic.h:4,
                       from include/linux/sysfs.h:20,
                       from include/linux/kobject.h:21,
                       from include/linux/device.h:17,
                       from include/linux/eisa.h:5,
                       from arch/parisc/kernel/pci.c:11:
      arch/parisc/include/asm/bitops.h: In function ‘set_bit’:
      arch/parisc/include/asm/bitops.h:82:2: error: implicit declaration of function ‘_atomic_spin_lock_irqsave’ [-Werror=implicit-function-declaration]
      arch/parisc/include/asm/bitops.h:84:2: error: implicit declaration of function ‘_atomic_spin_unlock_irqrestore’ [-Werror=implicit-function-declaration]
      Signed-off-by: default avatarRolf Eike Beer <eike-kernel@sf-tec.de>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      4a8a0788
  12. 31 Oct, 2011 1 commit
  13. 27 Sep, 2011 1 commit
    • Paul Bolle's avatar
      doc: fix broken references · 395cf969
      Paul Bolle authored
      There are numerous broken references to Documentation files (in other
      Documentation files, in comments, etc.). These broken references are
      caused by typo's in the references, and by renames or removals of the
      Documentation files. Some broken references are simply odd.
      
      Fix these broken references, sometimes by dropping the irrelevant text
      they were part of.
      Signed-off-by: default avatarPaul Bolle <pebolle@tiscali.nl>
      Signed-off-by: default avatarJiri Kosina <jkosina@suse.cz>
      395cf969
  14. 22 Sep, 2009 1 commit
  15. 03 Jul, 2009 1 commit
  16. 16 Jun, 2009 1 commit
    • Greg Kroah-Hartman's avatar
      parisc: remove driver_data direct access of struct device · d18dbfa7
      Greg Kroah-Hartman authored
      In the near future, the driver core is going to not allow direct access
      to the driver_data pointer in struct device.  Instead, the functions
      dev_get_drvdata() and dev_set_drvdata() should be used.  These functions
      have been around since the beginning, so are backwards compatible with
      all older kernel versions.
      
      Cc: linux-parisc@vger.kernel.org
      Cc: Helge Deller <deller@gmx.de>
      Cc: Kyle McMartin <kyle@mcmartin.ca>
      Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
      d18dbfa7
  17. 15 Mar, 2009 1 commit
  18. 13 Mar, 2009 1 commit
  19. 30 Jan, 2009 1 commit
  20. 05 Jan, 2009 2 commits
  21. 15 May, 2008 1 commit
  22. 29 Apr, 2008 1 commit
  23. 16 Mar, 2008 1 commit
  24. 06 Mar, 2008 1 commit
  25. 05 Mar, 2008 2 commits
  26. 05 Feb, 2008 1 commit
  27. 23 Oct, 2007 1 commit
    • FUJITA Tomonori's avatar
      parisc: fix sg_page() fallout · b61e8f48
      FUJITA Tomonori authored
      arch/parisc/kernel/pci-dma.c: In function 'pa11_dma_map_sg':
      arch/parisc/kernel/pci-dma.c:487: error: 'struct scatterlist' has no member named 'page'
      arch/parisc/kernel/pci-dma.c: In function 'pa11_dma_unmap_sg':
      arch/parisc/kernel/pci-dma.c:508: error: 'struct scatterlist' has no member named 'page'
      arch/parisc/kernel/pci-dma.c:508: error: 'struct scatterlist' has no member named 'page'
      arch/parisc/kernel/pci-dma.c: In function 'pa11_dma_sync_sg_for_cpu':
      arch/parisc/kernel/pci-dma.c:535: error: 'struct scatterlist' has no member named 'page'
      arch/parisc/kernel/pci-dma.c:535: error: 'struct scatterlist' has no member named 'page'
      arch/parisc/kernel/pci-dma.c: In function 'pa11_dma_sync_sg_for_device':
      arch/parisc/kernel/pci-dma.c:545: error: 'struct scatterlist' has no member named 'page'
      arch/parisc/kernel/pci-dma.c:545: error: 'struct scatterlist' has no member named 'page'
      Signed-off-by: default avatarFUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
      Signed-off-by: default avatarJens Axboe <jens.axboe@oracle.com>
      b61e8f48
  28. 18 Oct, 2007 1 commit
  29. 23 May, 2007 1 commit
  30. 12 Feb, 2007 1 commit
  31. 08 Feb, 2007 1 commit
  32. 08 Dec, 2006 1 commit
  33. 05 Oct, 2006 1 commit
  34. 04 Oct, 2006 5 commits